Two-way deterministic quantum key distribution against passive detector side channel attacks in the forward line

Two-way deterministic quantum key distribution against passive detector side channel attacks in... In the four-state two-way deterministic quantum key distribution (DQKD) protocol, Bob prepares a qubit randomly in one of four states and sends it to Alice. Alice encodes her key bit on the arrival qubit and returns it to Bob who measures the redux qubit to decode Alice’s key bit in a deterministic manner, without basis reconciliation. The unconditional security of the final key of this protocol has been proven in the ideal-device settings. Recently, it has been proven that two-way DQKD protocol is immune to all detector side channel attacks in the backward line A-to-B. In this paper, we study the security of two-way DQKD against passive detector side channel attacks in the forward line B-to-A. In a passive detector side channel attack, the eavesdropper Eve does not disturb quantum state of travel photon but utilizes the efficiency mismatch of two single-photon detectors to estimate the value of key bits, such as the time-shift attack. We prove that two-way DQKD is immune against all passive detector side channel attacks in the forward line B-to-A, although such attacks are efficient on BB84 protocol. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Two-way deterministic quantum key distribution against passive detector side channel attacks in the forward line

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-015-1083-0
Publisher site
See Article on Publisher Site

References

  • Experimental quantum cryptography
    Bennett, C; Bessette, F; Brassard, G; Salvail, L; Smolin, J
  • Source attack of decoy-state quantum key distribution using phase information
    Tang, Y-L; Yin, H-L; Ma, X; Fung, C-HF; Liu, Y; Yong, H-L; Chen, T-Y; Peng, C-Z; Chen, Z-B; Pan, J-W
  • Eavesdropping on the two-way quantum communication protocols with invisible photons
    Cai, Q-y
  • Security of two-way quantum key distribution
    Beaudry, NJ; Lucamarini, M; Mancini, S; Renner, R

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